Long time lurker, first time poster. Doesnt seem that I can find my answer so figured it's best to ask.
A few months ago I had some empty space on my aquaponics beds and after being suggested by my daughter to plant some seeds out of a rockmelon we bought at the shop I decided to give it a go. I normally only grow peppers (and lettuce to suck up the nitrates from my aquaponics system) so I'm in an unfamiliar area with the rock melon. From my limited experience growing water melons and pumpkins a few years back is that the male flowers don't have a round thing at the base, and female flowers do. Hand pollination is then pretty straight forward. In my case however I seem to only be able to find female flowers (I think they are female flowers) - so I can't artificially pollinate them, and the flowers are falling off since they havent tied up.
Growing method: aquaponics
Temperature: 15C night - 25-35C day
Medium: river stone
Water pH: 7.2
My question is - do rockmelon (and sorry I have no idea what type of a rockmelon it is) flowers differ in shape between male and female flowers? Or is there a deficiency of some sort that can promote only one type of flowers to grow? I have two plants but all flowers seem to be the same.
My limitation is that given that this is aquaponics I can't use any conventional fertilisers as it'll more than likely kill the crayfish that's in the tank that's being used to feed the plants. So I have to resort to organic methods to try and ensure the plants have the right nutrients.
I didn't have much hope for these plants when I planted them but since they are actually flowering I figured I might as well investigate to see if I can actually get some fruit to grow.
Any suggestions would be greatly appreciated. Pics below.